code: def _initialize(self):
      # Set default configuration values.
      self.data = EasyDict()
      hub_name = (
          md5(str(uuid.uuid1())[-12:]) + "-" + str(int(time.time()))
      )
      self.data.hub_name = hub_name
  
imports: import hashlib
  import os
  import time
  import json
  import uuid
  import yaml
  from easydict import EasyDict
  import paddlehub.env
label_desc: Use image node_id 2 for calling the CacheConfig obj's underlying member method code with example usage: obj._initialize() without return types